Improvement in machine for cutting- mouldings in wood



inted tat-tet @aient @wird f W. A. MCDONALD, or M'oRRIs'ANIA, `NEW YORK. Laim Patat No. 89,937, dated May 11, 1869.

IMPROVEMENT IN MACHINE- IEOR4 CUTTING MOULDING-S IN'WOVOD.

. i -fo-p-m The .chedule referred to in these Letters Patent and making part of the same.

To all whom 'it concern;

' Figure 2isV `a plan or top view, partly in sectionof Similar letters of reference indicatecorresponding arts.

p.jlhis invention relates to a new machine for sawing the faces of mouldings and of ornamental designs, by means of circular or straight. saws, so that, especially for ornamental. pendants and projections,.the machine can'be advantageously employed-.

The inveutionconsists more particularly in the -application of a new-saw-blade which has the cross-section of the moulding to vbe cut, and which is gradually tapered toa point, and toothed on its tapering edge,

so that every portion of the cross-section is therebyl t made to cut`.` I

A, in `the drawing, represents a disk or'head on a rotating shaft,B, and' carrying the saw O. Y

l The blade of the saw is corrugated, or stamped in for-m of the moulding to -be cut, as indicated in iig.l 2,

and is then tapered from en d .to end, so that it will have itsfull width at one end, and run to apoint at the other end, as is clearly `shown' in g. l. f

The tapering edge of'the saw is the toothed' and cutting-edgeof the same As the cross-section of the-.blade was established before the taper was puton, the teeth of the saw will stand in line with the cross-section, and will, therefore,

l `as the saw isl drawn through the wood, vcommencing at the thin end, makean incision in the wood equal to the cross-section of the saw. Thus crshaped, as well as S and Z-sl1aped incisions can vbe produced in the wood.`

Byhaving two saws of equal shape, but reversed, as in fig. 2, set on one block, orwork, at least, on the same piece'of wood, the incisions will be made in opposite directions, to separate from the wood suchu portions as are necessary to leave ornamental projections, as shown at C vin the red-lined diagram. l

The wood to be sawed is placed upon a suitable bed, D, and can be adjusted on the same by means of gaugemarks, to have the incisions made the requisite dise.

tances apart.

The bed may be pivoted, as in iig. 1, so that it can be placed at a suitable incline, and should be provided with a guide-plate, F, by which the wood is guided in the proper position, while it is fed,-to have diii'erent incisions made.

It will be understood'that the Wood remains stationary while the saw is cutting it, and that it isonly moved to have a new-incision made.

V Whenever the saw enters at its thin end, and is drawn through the wood, it will make au incision equal in shape to its crosssection.

Having thus described my invention,

Patent-v 1. The stamped or moulded saw-blade G, when formed with .the requisite angular, curved, or irregular cross-section, `and. tapered toward' one end, its teeth being' on the tapering edge, as shown, operating as described, for the purpose specified. y y

2. Arranging two moulded taperingsaw-blades C, which are constructed as herein described, on one machine, to cut into the edge ofa Wooden .pla-te, as herein set-forth', for the purpose specified.

W. A. -MGDONALD. Witnesses:

FnANK BLoeKLEY,

li. ROBERTS.

I claim as new, and desire to secure byLettersn 

